CN110987826A - Meat quality detection device - Google Patents
Meat quality detection device Download PDFInfo
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- CN110987826A CN110987826A CN201911294502.9A CN201911294502A CN110987826A CN 110987826 A CN110987826 A CN 110987826A CN 201911294502 A CN201911294502 A CN 201911294502A CN 110987826 A CN110987826 A CN 110987826A
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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Abstract
The invention discloses a meat quality detection device, which comprises a box body, wherein a visual platform is arranged in the box body, a universal support is fixed at the top end of the visual platform, a light source fixing frame, a light source holder, a camera adjusting frame and a camera fixing frame are sequentially arranged on the universal support from bottom to top, two ends of the light source fixing frame are respectively coupled with a light source supporting arm, one end of the light source supporting arm, which is far away from the light source fixing frame, is coupled with another identical light source supporting arm, the light source supporting arm, which is close to the light source holder, is coupled with the end part of the light source holder, an annular light source is clamped on the light source holder, a camera is clamped on the camera adjusting frame, the camera adjusting frame is in clearance fit with the camera fixing frame, adjusting inclined teeth are arranged on the side wall of the box body, the industrial personal computer is connected with the camera through a kilomega network cable and is electrically connected with the visible/near-infrared spectrometer.
Description
Technical Field
The invention relates to the field of intelligent detection of meat quality, in particular to a meat quality detection device.
Background
China is a world-wide big country for pork production and consumption. In modern meat and meat product processing, frozen meat is a raw material for many food companies, regulating the meat food market for important products. The meat is frozen at low temperature, the shelf life of the meat can be effectively prolonged, and the method plays an extremely important role in remote transportation, import and export trade, national strategic storage and the like. Currently, the judgment of the freshness of meat is mainly carried out from three aspects: sensory properties, characteristics and content of putrefactive decomposition products, and total number of bacteria. The sensory characters are distinguished from indexes such as flesh color, smell and texture of pork; the detection indexes of the putrefactive decomposition products mainly comprise acid value, peroxide value, volatile basic nitrogen, malonaldehyde content, protein carbonyl content and the like; the bacterial count can be determined by plate counting to determine the total number of colonies in the meat product. However, the evaluation of the sensory properties is susceptible to subjective factors of sensory evaluators and the surrounding environment during the evaluation. The determination of the characteristics and the content of the putrefactive decomposition products and the total number of bacteria needs a large amount of chemical experiments, the detection process is complicated and long, and the defects of hysteresis, sample damage and the like are overcome. The near infrared spectrum detection technology has the main advantages that: (1) the spectrometer is simple to operate, low in detection cost and free of chemical reagents; (2) the sample to be detected is hardly damaged, and the sample before detection generally does not need to be pretreated; (3) the detection speed is high, and online monitoring is easy to realize; (4) multiple indicators of the sample may be detected simultaneously. The computer vision technology is that the camera and the image card are used for obtaining images, and the computer and the related processing method extract the image characteristics, so that the relevant characteristics and information of things can be obtained by simulating naked eyes, and the computer vision technology has the main advantages that: (1) nondestructive testing; (2) the detection speed is high, and the automation degree is high; (3) the detection precision is high. Near infrared spectroscopy and computer vision inspection have been widely used in the food field because of many advantages. Researches show that the accuracy rate of detecting the freshness of meat by adopting a spectrum and computer vision technology is high, and the method has feasibility, but most of the existing researches are based on quality detection of cold fresh meat, so that the researches on frozen meat are less, and especially, early warning systems for detection are less in development.
Disclosure of Invention
The invention aims to provide a meat quality detection device to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a meat quality detection device, which comprises a box body, wherein a vision platform is placed in the box body, a universal support is fixed at the top end of the vision platform, a light source fixing frame, a light source holding frame, a camera adjusting frame and a camera fixing frame are sequentially arranged on the universal support from bottom to top, two ends of the light source fixing frame are respectively connected with a light source supporting arm in a shaft mode, one end, far away from the light source fixing frame, of each light source supporting arm is connected with another identical light source supporting arm in a shaft mode, the light source supporting arm close to the light source holding frame is connected with the end portion of the light source holding frame in a shaft mode, an annular light source is clamped on the light source holding frame, a camera is clamped on the camera adjusting frame, the camera and the annular light source are arranged in a vertically corresponding mode, the camera adjusting frame is in clearance, the utility model discloses a portable optical fiber instrument, including optic fibre regulating spindle, optical fibre fixed knot, the fixed knot of fixing, the fixed knot is fixed with mount and fixed knot on the lateral wall of box, the mount corresponds the setting from top to bottom with fixed knot, fixed knot corresponds the setting from top to bottom with the regulation skewed tooth, the fixed knot is gone up and to be dismantled and is connected with visible/near infrared spectrum appearance, can dismantle on the mount and be connected with halogen tungsten light source, it is equipped with the industrial computer to inlay on the case lid of box, the industrial computer passes through the giga net twine with the camera and is connected, industrial computer and visible/near infrared spectrum appearance electric.
Preferably, the light source fixing frame comprises a first fixing block, a connecting hole is formed in the center of the first fixing block, the first fixing block is sleeved on the universal support through the connecting hole and fixed through a bolt behind the first fixing block, two first long shafts are fixed on the side wall of the first fixing block, and the first long shafts are in clearance fit with the first fixing block and fixed through a bolt on the left side of the first fixing block.
Preferably, the light source supporting arm close to one end of the light source fixing frame is fixed on the side wall of the first fixing block through a bolt.
Preferably, the light source holder includes two holding pieces that each other coupling, the annular light source centre gripping is between two holding pieces, it has first gasket to connect on the holding piece, has inserted first screw rod between two holding pieces, the one end threaded connection that the holding piece was kept away from to first screw rod has first adjust knob, is close to the light source holder the light source support arm coupling is on the lateral wall of holding piece.
Preferably, the camera mount includes second fixed block and the third fixed block that mutually perpendicular fixed, the connecting hole has been seted up on the third fixed block, the third fixed block passes through connecting hole and gimbal clearance fit and passes through the bolt fastening, the junction of second fixed block and third fixed block is equipped with the skewed tooth, the meshing has the second screw rod on the skewed tooth, the one end of second screw rod is stretched out the second fixed block and is fixed with third adjust knob.
Preferably, the camera alignment jig includes the fourth fixed block, the opening has been seted up on the fourth fixed block, be fixed with adjusting stud and two fixed axles on the opening of fourth fixed block, adjusting stud is between two fixed axles, adjusting stud's one end is stretched out the fourth fixed block coupling and is had second adjust knob, adjusting stud both ends have been seted up reverse screw, adjusting stud middle part is smooth axle, be equipped with the splint that two symmetries set up on adjusting stud, splint and adjusting stud's screw thread section meshing, splint and fixed axle clearance fit, it has the second gasket to splice on the splint, the camera centre gripping is between two splint, be fixed with the second major axis on the fourth fixed block and the relative lateral wall of opening, second major axis and third fixed block clearance fit.
Preferably, wheels are coupled to the bottom end of the box body through a shaft, and a handle is arranged on a box cover of the box body.
Preferably, the top surface of the vision platform is coated with a black coating.
The invention discloses the following technical effects: the internal connection of each device is reasonable and effective, the performance of the instrument is normal, when each component is assembled, the camera lens and the annular light source are coaxial in the Z direction, the Y-shaped optical fiber ensures that the movement path of the Y-shaped optical fiber does not interfere with the image acquisition device while the normal work is ensured, a whole set of spectrum vision fusion detection equipment and spectrum vision fusion detection system equipment coupled with each instrument are obtained through the mechanical devices such as the light source fixing frame, the light source adjusting frame, the camera fixing frame, the camera adjusting frame and the spectrometer fixing frame, the positions of the modules are reasonably arranged in the design process so as to be convenient to disassemble and adjust, and the like, and the quality information of the sample can be monitored in real time, so that the device can detect the corruption degree of cold fresh meat and frozen meat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of a meat quality detecting apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a light source holder according to the present invention;
FIG. 3 is a schematic view of a light source supporting arm according to the present invention;
FIG. 4 is a schematic structural diagram of a light source adjusting bracket according to the present invention;
FIG. 5 is a cross-sectional view of a camera holder according to the present invention;
FIG. 6 is a schematic view of a camera adjusting bracket according to the present invention;
FIG. 7 is a schematic structural view of the side wall of the housing with the fiber adjusting shaft secured thereto according to the present invention;
FIG. 8 is a front view of the case of the present invention;
wherein, 1 is a box body, 2 is a visual platform, 3 is a universal bracket, 4 is a light source fixing frame, 4.1 is a first fixed block, 4.2 is a first long shaft, 5 is a light source holder, 5.1 is a clamping sheet, 5.2 is a first gasket, 5.3 is a first screw rod, 5.4 is a first adjusting knob, 6 is a camera adjusting frame, 6.1 is a fourth fixed block, 6.2 is an adjusting stud, 6.3 is a fixed shaft, 6.4 is a second adjusting knob, 6.5 is a clamping plate, 6.6 is a second gasket, 6.7 is a second long shaft, 7 is a camera fixing frame, 7.1 is a second fixed block, 7.2 is a third fixed block, 7.3 is an oblique tooth, 7.4 is a second screw rod, 7.5 is a third adjusting knob, 8 is a support arm light source, 9 is an annular light source, 10 is a camera, 11 is an adjusting oblique tooth, 12 is an optical fiber adjusting shaft, 13 is an optical fiber fixing head, 14 is an optical fiber, 15 is a fixing frame, 16 is a fixing frame, 17 is a near-tungsten halogen light source/near infrared spectrometer, 19 is an industrial personal computer, 20 is wheels, and 21 is a handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-8, the invention discloses a meat quality detection device, comprising a box body 1, a vision platform 2 is placed in the box body 1, a universal support 3 is fixed at the top end of the vision platform 2, the universal support 3 is sequentially provided with a light source fixing frame 4, a light source holder 5, a camera adjusting frame 6 and a camera fixing frame 7 from bottom to top, two ends of the light source fixing frame 4 are respectively coupled with a light source supporting arm 8, one end of the light source supporting arm 8 far away from the light source fixing frame 4 is coupled with another identical light source supporting arm 8, the light source supporting arm 8 close to the light source holder 5 is coupled at the end of the light source holder 5, an annular light source 9 is clamped on the light source holder 5, a camera 10 is clamped on the camera adjusting frame 6, the camera 10 and the annular light source 9 are correspondingly arranged up and down, the camera adjusting frame 6 is in clearance fit with, be equipped with on the lateral wall of box 1 and adjust skewed tooth 11, swing joint has optic fibre regulating spindle 12 on adjusting skewed tooth 11, optic fibre regulating spindle 12 perpendicular to universal bracket 3, optic fibre regulating spindle 12 rigid coupling has optic fibre fixed head 13, be equipped with optic fibre 14 on the optic fibre fixed head 13, be fixed with mount 15 and fixed knot 16 on the lateral wall of box 1, mount 15 corresponds the setting from top to bottom with fixed knot 16, fixed knot 16 corresponds the setting from top to bottom with adjusting skewed tooth 11, the last visible/near infrared spectrometer 18 that is connected with can dismantle of fixed knot 16, the last halogen tungsten light source 17 that can dismantle of mount 15, it is equipped with industrial computer 19 to inlay on the case lid of box 1, industrial computer 19 passes through kilomega network cable with camera 10 and is connected, industrial computer 19 and visible/near infrared spectrometer 18 electric connection, industrial computer 19 is the computer of the win7 system of touch screen, at present, a camera 10 and an industrial personal computer 19 are connected through a gigabit network cable, a visible/near-infrared spectrometer 18 and the industrial personal computer 19 are connected through a USB, the industrial personal computer 19 is of an embedded integrated design, 128GSSD, 8G fast reading and writing, a gigabit network port, wireless WIFI transmission, 3 independent power supply USB3.0 interfaces, 2 RS232 interfaces, 2 HDMI interfaces, IP67 three-proofing standards, and 17-inch capacitance touch screens can integrate spectrometer and imaging sensor acquisition software.
According to a further optimization scheme, the light source fixing frame 4 comprises a first fixing block 4.1, a connecting hole is formed in the center of the first fixing block 4.1, the first fixing block 4.1 is connected with the universal support 3 in a sleeved mode through the connecting hole and fixed through bolts behind the first fixing block 4.1, two first long shafts 4.2 are fixed on the side wall of the first fixing block 4.1, and the first long shafts 4.2 are in clearance fit with the first fixing block 4.1 and fixed through bolts on the left side of the first fixing block 4.1.
According to the further optimization scheme, the light source supporting arm 8 close to one end of the light source fixing frame 4 is fixed on the side wall of the first fixing block 4.1 through a bolt.
Further optimization scheme, light source holder 5 includes two holding pieces 5.1 of mutual coupling, the centre gripping of annular light source 9 is between two holding pieces 5.1, it has first gasket 5.2 to glue the joint on holding piece 5.1, has inserted first screw rod 5.3 between two holding pieces 5.1, the one end threaded connection that holding piece 5.1 was kept away from to first screw rod 5.3 has first adjust knob 5.4, is close to light source holder 5 8 coupling of light source support arm is on the lateral wall of holding piece 5.1.
Further optimization scheme, camera mount 7 includes second fixed block 7.1 and the third fixed block 7.2 that mutually perpendicular is fixed, the connecting hole has been seted up on the third fixed block 7.2, third fixed block 7.2 passes through connecting hole and 3 clearance fit of gimbal and passes through the bolt fastening, the junction of second fixed block 7.1 and third fixed block 7.2 is equipped with skewed tooth 7.3, the meshing has second screw rod 7.4 on the skewed tooth 7.3, the one end of second screw rod 7.4 is stretched out second fixed block 7.1 and is fixed with third adjust knob 7.5.
In a further optimized scheme, the camera adjusting frame 6 comprises a fourth fixing block 6.1, an opening is formed in the fourth fixing block 6.1, an adjusting stud 6.2 and two fixing shafts 6.3 are fixed on the opening of the fourth fixing block 6.1, the adjusting stud 6.2 is arranged between the two fixing shafts 6.3, one end of the adjusting stud 6.2 extends out of the fourth fixing block 6.1 and is connected with a second adjusting knob 6.4 in a shaft mode, reverse threads are formed at two ends of the adjusting stud 6.2, the middle of the adjusting stud 6.2 is a smooth shaft, two clamping plates 6.5 which are symmetrically arranged are arranged on the adjusting stud 6.2, the clamping plates 6.5 are meshed with thread sections of the adjusting stud 6.2, the clamping plates 6.5 are in clearance fit with the fixing shafts 6.3, a second gasket 6.6 is glued on the clamping plates 6.5, the camera 10 is clamped between the two clamping plates 6.5, a second long shaft 6.7 is fixed on the side wall, opposite to the opening, of the fourth fixing block 6.1, the second long shaft 6.7 is in clearance fit with a second fixing block 7.1.
In a further optimized scheme, wheels 20 are coupled to the bottom end of the box body 1 in a shaft mode, and a handle 21 is arranged on a box cover of the box body 1.
In a further optimized scheme, the top surface of the visual platform 2 is coated with a black coating.
Example 2
Compared with the prior art, the meat detection device provided by the invention has the following research on spectral image recognition of frozen pork in different storage periods:
spectrum acquisition core component: FLAME-T-VIS-NIR spectrometer (Ocean Optics), HL-2000-LL light source (Ocean Optics), QR400-7-VIS-NIR standard reflection probe fiber (Ocean Optics). An image acquisition core component: high speed line scanning B1621M camera (imparx), ring light source ILH-VNIR (shanghai wuling photonics ltd.).
Continuously tracking the quality of frozen meat stored for 10 months under-18 ℃. The spectrum and image information of the frozen meat are collected every month and month. The spectral and image information of 100 samples are collected each month, the size of each sample is about 7cm × 7cm × 1cm, and 1000 samples are collected in 10 months. When the model is built, 60% of samples are randomly taken as a correction set to be used for building the model, and the rest 40% of samples are taken as a prediction set to be used for verifying the prediction capability of the model. The spectrum is preprocessed by standard normal variable transformation (SNV), and the image characteristics are preprocessed by z-score function standardization; the fused data refers to the fact that the spectrum is fused with the image characteristic value after being preprocessed by SNV, and then z-score function standardization preprocessing is conducted. And (3) establishing discrimination models of the frozen meat in different storage periods by adopting Linear Discriminant Analysis (LDA).
During data processing, selecting a spectrum with a wave band range of 408.46nm-1000.4nm, carrying out SNV pretreatment on the spectrum with 3148 spectrum data points, establishing a model by adopting LDA, and carrying out discriminant analysis on frozen meat with different storage periods of 10 months, wherein the correct discriminant rate of a prediction set is 95%.
Extracting 18 color characteristic parameters such as mean values and variances of R (red), G (green), B (blue), H (hue), S (saturation), I (intensity), L (brightness), a (red-green degree) and B (yellow-blue degree) of the frozen meat image, 6 texture characteristic parameters based on the statistical moment, and 16 texture characteristic parameters based on the gray level co-occurrence matrix, wherein the total number of the image characteristic parameters is 40. When the image information is combined with an LDA model to judge frozen meat with different storage periods of 10 months, the correct judging rate of a prediction set is 63%. The surface texture and color of the frozen meat are changed to a certain extent in the storage period, but the image technology discrimination effect is not ideal and is inferior to the visible/near infrared spectrum technology.
And when the spectrum and the image information are fused and an LDA model is established to judge the frozen meat in different storage periods of 10 months, the correct judgment rate of the prediction set is 97%.
The result shows that the discrimination effect of the spectral information on the frozen meat in different storage periods is ideal and is superior to the discrimination effect of the image information; the discrimination effect of the model can be improved by fusing the spectrum and the image information.
TABLE 1 LDA discrimination Effect of spectral and image information on frozen meat of different storage periods
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A meat quality detection device which characterized in that: comprises a box body (1), a visual platform (2) is placed in the box body (1), a universal support (3) is fixed at the top end of the visual platform (2), a light source fixing frame (4), a light source holding frame (5), a camera adjusting frame (6) and a camera fixing frame (7) are sequentially arranged from bottom to top on the universal support (3), two ends of the light source fixing frame (4) are respectively coupled with a light source supporting arm (8), one end of the light source supporting arm (8) far away from the light source fixing frame (4) is coupled with another identical light source supporting arm (8), the light source supporting arm (8) close to the light source holding frame (5) is coupled at the end part of the light source holding frame (5), an annular light source (9) is clamped on the light source holding frame (5), a camera (10) is clamped on the camera adjusting frame (6), and the camera (10) and the annular light source (9) are, the camera adjusting bracket (6) is in clearance fit with the camera fixing bracket (7), the side wall of the box body (1) is provided with an adjusting skewed tooth (11), the adjusting skewed tooth (11) is movably connected with an optical fiber adjusting shaft (12), the optical fiber adjusting shaft (12) is perpendicular to the universal support (3), the optical fiber adjusting shaft (12) is fixedly connected with an optical fiber fixing head (13), an optical fiber (14) is arranged on the optical fiber fixing head (13), the side wall of the box body (1) is fixedly provided with a fixing bracket (15) and a fixing buckle (16), the fixing bracket (15) and the fixing buckle (16) are arranged up and down correspondingly, the fixing buckle (16) and the adjusting skewed tooth (11) are arranged up and down correspondingly, the fixing buckle (16) is detachably connected with a visible/near infrared spectrometer (18), the fixing bracket (15) is detachably connected with a halogen tungsten light source (17), the infrared spectrometer is characterized in that an industrial personal computer (19) is embedded on a case cover of the case body (1), the industrial personal computer (19) is connected with the camera (10) through a gigabit network cable, and the industrial personal computer (19) is electrically connected with the visible/near-infrared spectrometer (18).
2. The meat quality detection apparatus according to claim 1, wherein: light source mount (4) include first fixed block (4.1), the connecting hole has been seted up at first fixed block (4.1) center, first fixed block (4.1) through the connecting hole with cup joint on gimbal (3) and through first fixed block (4.1) rear bolt fastening, be fixed with two first major axis (4.2) on the lateral wall of first fixed block (4.1), first major axis (4.2) and first fixed block (4.1) clearance fit and through first fixed block (4.1) left side bolt fastening.
3. The meat quality detection apparatus according to claim 2, wherein: the light source supporting arm (8) close to one end of the light source fixing frame (4) is fixed on the side wall of the first fixing block (4.1) through a bolt.
4. The meat quality detection apparatus according to claim 3, wherein: light source holder (5) are including two holding pieces (5.1) of mutual coupling, annular light source (9) centre gripping is between two holding pieces (5.1), the rubberizing of holding piece (5.1) has connect first gasket (5.2), has inserted first screw rod (5.3) between two holding pieces (5.1), the one end threaded connection that holding piece (5.1) were kept away from in first screw rod (5.3) has first adjust knob (5.4), is close to light source holder (5) light source support arm (8) coupling is on the lateral wall of holding piece (5.1).
5. The meat quality detection apparatus according to claim 4, wherein: camera mount (7) include second fixed block (7.1) and third fixed block (7.2) that mutually perpendicular is fixed, the connecting hole has been seted up on third fixed block (7.2), third fixed block (7.2) pass through connecting hole and universal bracket (3) clearance fit and pass through the bolt fastening, second fixed block (7.1) are equipped with skewed tooth (7.3) with the junction of third fixed block (7.2), the meshing has second screw rod (7.4) on skewed tooth (7.3), the one end of second screw rod (7.4) is stretched out second fixed block (7.1) and is fixed with third adjust knob (7.5).
6. The meat quality detection apparatus according to claim 5, wherein: the camera adjusting bracket (6) comprises a fourth fixing block (6.1), an opening is formed in the fourth fixing block (6.1), an adjusting stud (6.2) and two fixing shafts (6.3) are fixed on the opening of the fourth fixing block (6.1), the adjusting stud (6.2) is arranged between the two fixing shafts (6.3), one end of the adjusting stud (6.2) extends out of the fourth fixing block (6.1) and is connected with a second adjusting knob (6.4) in a shaft mode, reverse threads are formed in two ends of the adjusting stud (6.2), the middle of the adjusting stud (6.2) is a smooth shaft, two clamping plates (6.5) symmetrically arranged are arranged on the adjusting stud (6.2), the clamping plates (6.5) are meshed with thread sections of the adjusting stud (6.2), the clamping plates (6.5) are in clearance fit with the fixing shafts (6.3), a second gasket (6.6) is connected on the clamping plates (6.5), and a camera (10) is clamped between the two clamping plates (6.5), and a second long shaft (6.7) is fixed on the side wall of the fourth fixed block (6.1) opposite to the opening of the fourth fixed block, and the second long shaft (6.7) is in clearance fit with the third fixed block (7.2).
7. The meat quality detection apparatus according to claim 1, wherein: the bottom end of the box body (1) is connected with wheels (20) in a shaft mode, and a handle (21) is arranged on a box cover of the box body (1).
8. The meat quality detection apparatus according to claim 1, wherein: the top surface of the visual platform (2) is covered with a black coating.
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